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Dry Oil Flows to Surface- Water Shut-Off Programme
Dry Oil Flows to Surface- Water Shut-Off Programme.
About this update from Uk Oil & Gas Plc
[{"type":"text","content":"\n \n \n RNS Number : 4190F\n UK Oil & Gas PLC\n 09 March 2020\n \n \n \n \n UK Oil & Gas PLC\n \n \n (\"UKOG\" or the \"Company\")\n \n \n \n \n \n Dry Oil Flows to Surface Following Successful Horse Hill-2z Water Shut-Off Programme \n \n \n \n \n \n \n \n \n \n \n \n UK Oil & Gas PLC (London AIM: UKOG) is pleased to announce that the intervention to shut off significant formation water ingress into its Horse Hill-2z (\"HH-2z\") horizontal production well has been successful.\n \n \n \n \n \n Following the identification of the water ingress source via production logging, a rigid setting Thermatek® plug was set over a zone of open natural fractures clustered at the deepest part or \"toe\" of the wellbore. Initial testing of HH-2z post-Thermatek® has demonstrated a continuous flow of dry oil to surface, confirming that the plug has eliminated underlying formation water ingress into HH-2z. \n \n \n \n \n \n Dry oil flow rates during the initial 48-hour \"clean-up\" period to date are encouraging, with metered daily rates averaging 223 barrels of oil per day (\"bopd\"). However, as is to be expected in the early clean-up stage of such a horizontal wellbore, both oil and associated gas rates have been very variable. Half hourly rates have thus ranged from a high of 778 bopd to a low of around 10 bopd during intermittent short periods of \"slugging\" (i.e. the return of discrete pockets of gas and/or completion fluids). \n \n \n \n \n \n The water ingress problem meant that HH-2z remained shut-in for almost 3 months, with spent drilling and completion fluids within the near wellbore. Consequently, it is expected that the full clean-up process is likely to take a number of weeks of aggregate flow. As part of the clean-up process, to ensure the full remaining horizontal section contributes towards aggregate oil flow, further interventions are planned to help fine-tune and optimise flow from the well. \n \n \n \n \n \n HH-2z clean-up operations are planned to continue over the coming week, after which essential maintenance and a planned upgrade of well test and production facilities will occur. These operations, designed primarily to enable simultaneous production from HH-1 and HH-2z, will require both HH-1 and HH-2z to be shut-in for a period of u...